Just got back from my buddy's house, working on the new car. He's a MB guy so I dodged the big bullet with these cars that is having to take them to a Mercedes dealer to work on them. In fact that's why they have such crappy resale value and coincidentally how I got such a good deal on it. Anyway, the torque converter was "Shuddering" a little which is fairly common and can be a number of things. After ruling out tires and driveshafts we concluded it was a TC thing. I'll interject here to mention that getting fluid in this tranny is a drag and the dumbest shite I ever saw. Anyway, a couple tubes of the stop shudder stuff did the trick. A lot of people use it and say they never have another problem, but really I used it as a diagnostic tool. Before I spend $260 on fluid and a filter I wanted to make sure it was a fluid issue and not a TC issue. Replacing the torque converter is probably a $2000 job.
So I am happy. I'll drive it until my buddy has the time and I have the extra cash to do a fluid and filter change on the tranny. Now I can concentrate on getting some hardware installed for gun totin'.